CN220727444U - Pipeline flange - Google Patents
Pipeline flange Download PDFInfo
- Publication number
- CN220727444U CN220727444U CN202322521914.XU CN202322521914U CN220727444U CN 220727444 U CN220727444 U CN 220727444U CN 202322521914 U CN202322521914 U CN 202322521914U CN 220727444 U CN220727444 U CN 220727444U
- Authority
- CN
- China
- Prior art keywords
- flange
- flange plate
- locking surface
- bolt
- clamping sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a pipeline flange, which is characterized in that an upper locking surface propped against a bolt and a lower locking surface matched with a nut are arranged on the inner wall of a clamping sleeve, and a fixing piece is limited by the upper locking surface and the lower locking surface of the clamping sleeve, so that the condition that the bolt is unscrewed due to vibration is avoided. When the cutting ferrule is installed, the conical surface on the cutting ferrule has downward force to the abutting surface of the first flange plate, and upward force to the abutting surface of the second flange plate, so that the first flange plate and the second flange plate are more attached, the problem that the first flange plate, the second flange plate and the sealing piece are not tight due to the fact that the nuts are not screwed in place when the fixing pieces are connected, and the sealing is not tight due to the fact that gaps are formed in the first flange plate and the second flange plate and the sealing piece is avoided, a good sealing environment is formed, and the problem that the joint of the flange plates leaks when bolts are broken due to vibration is solved.
Description
Technical Field
The utility model relates to the technical field of flanges, in particular to a pipeline flange.
Background
The flange connection is to fix two pipelines, pipe fittings or devices on one flange plate, and fasten the two flange plates together by bolts to complete the connection. Some pipe fittings and equipment are already provided with flanges and are also flanged. The flange connection is an important connection mode for pipeline construction, is convenient to use and can bear larger pressure. The existing flange is connected with the pipeline by matching the bolts and nuts with the rubber ring, but the sealing performance of the connecting mode is poor, so that a sealing structure is usually added in the prior art. As disclosed in patent No. (cn202122168448. X), a pipe flange performs primary sealing by an inner sealing ring disposed between a first pipe and a second pipe, an outer sealing ring performs secondary sealing, and a convex ring of the outer sealing ring is connected with the first pipe and the second pipe, and finally, three sealing is realized by connection of the first flange and the second flange, so that the overall sealing performance is improved, but after the flange is fixed by the bolts of the above patent, bolt wire-backing conditions occur due to vibration, and leakage is caused at the joint of the flanges, so that a pipe flange with good sealing performance and no influence of bolt wire-backing is required.
Disclosure of Invention
In order to solve the problems, the utility model provides a pipeline flange which can still keep good sealing when bolts are removed.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a pipeline flange, includes first ring flange, second ring flange and mounting, the mounting includes bolt and nut, first ring flange and second ring flange are provided with corresponding through-hole, the mounting passes through-hole connection first ring flange and second ring flange, still includes a pair of cutting ferrule of parcel in first ring flange and second ring flange circumference outside, the inner wall of cutting ferrule is provided with the locking face and with nut assorted lower locking face on the locking face that offsets with first ring flange, lower locking face is provided with the screw rod sliding fit's of bolt cross slot.
The utility model is further characterized in that one end of the through hole on the first flange plate is provided with a clamping groove, and the bolt is embedded in the clamping groove to prop against the upper locking surface.
The utility model is further characterized in that the upper locking surface of the clamping sleeve is provided with a conical surface, and the first flange plate is provided with an abutting surface corresponding to the conical surface.
The utility model is further characterized in that the lower locking surface of the clamping sleeve is provided with a conical surface, and the second flange plate is provided with an abutting surface corresponding to the conical surface.
The utility model is further arranged that the clamping sleeve is detachably mounted through the fixing piece.
The utility model is further provided that a sealing piece is arranged between the first flange plate and the second flange plate.
In summary, the utility model has the following beneficial effects:
1. the bolt is arranged in the clamping groove of the first flange plate, the upper locking surface of the clamping sleeve abuts against the bolt, the nut is arranged between the second flange plate and the lower locking surface, the fixing piece is limited through the upper locking surface of the clamping sleeve and the lower locking surface, rotation or displacement of the fixing piece when the fixing piece is subjected to vibration is avoided, and further screw withdrawal of the bolt is avoided.
2. When the cutting ferrule is installed, the upper locking of cutting ferrule has decurrent power to first ring flange, and lower locking has ascending power to the second ring flange, makes first ring flange and second ring flange hug closely more, and the nut is not screwed up in place when avoiding the mounting and is caused the gap to appear between first ring flange and second ring flange and the sealing fin and lead to sealing not tight problem, makes sealed effect better.
Drawings
FIG. 1 is a schematic view of the connection of a first flange plate and a second flange plate according to the present utility model.
Fig. 2 is a schematic structural view of the ferrule of the present utility model.
Fig. 3 is a schematic view of the structure of the bottom surface of the ferrule of the present utility model.
Fig. 4 is a schematic view of the overall structure of the present utility model.
Reference numerals:
1. a first flange; 2. a second flange; 3. a bolt; 4. a nut; 5. a through hole; 6. a cutting sleeve; 7. an upper locking surface; 8. a lower locking surface; 9. a transverse groove; 10. a clamping groove.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-4, this embodiment discloses a pipe flange, including a first flange 1, a second flange 2 and a fixing piece, the fixing piece includes a bolt 3 and a nut 4, the first flange 1 and the second flange 2 are provided with corresponding through holes 5, the fixing piece passes through the through holes 5 to connect the first flange 1 and the second flange 2, still include a pair of cutting ferrule 6 wrapped up in the circumference outside of the first flange 1 and the second flange 2, the inner wall of cutting ferrule 6 is provided with an upper locking surface 7 that offsets with the first flange 1 and a lower locking surface 8 that matches with the nut 4, lower locking surface 8 is provided with a transverse groove 9 with the screw sliding fit of bolt 3.
As a further arrangement of the above scheme, a clamping groove 10 is formed at one end of the through hole 5 in the first flange plate 1, and the bolt 3 is embedded in the clamping groove 10 and abuts against the upper locking surface 7.
As a further arrangement of the above solution, the upper locking surface 7 of the ferrule 6 is provided with a conical surface, and the first flange 1 is provided with an abutment surface corresponding to the conical surface.
As a further arrangement of the above solution, the lower locking surface 8 of the ferrule 6 is provided with a conical surface, and the second flange 2 is provided with an abutment surface corresponding to the conical surface.
As a further arrangement of the above, the ferrule 6 is detachably mounted by means of a fixing element.
As a further arrangement of the above solution, a sealing piece is arranged between the first flange plate 1 and the second flange plate 2.
As shown in fig. 1, the first flange 1 and the second flange 2 are respectively clamped with a first pipeline and a second pipeline, a sealing piece is arranged between the first flange 1 and the second flange 2, a fixing piece is used for positioning the first flange 1 and the second flange 2, a bolt 3 passes through a through hole 5 on the first flange 1 and a through hole 5 on the second flange 2, the head of the bolt 3 is positioned in a clamping groove 10 on the first flange 1 and is embedded with the first flange 1, the head of the bolt 3 is flush with the upper surface of the first flange 1, at the moment, an upper locking surface 7 of a clamping sleeve 6 seals the clamping groove 10 and abuts against the head of the bolt 3, the head of the bolt 3 is limited, displacement is avoided when the bolt rotates or is subjected to vibration, the screw rod passes through the through hole 5 of the second flange 2, and a screw nut 4 is screwed to fix the first flange 1 and the second flange 2.
As shown in fig. 2-4, the opening of the transverse groove 9 of the clamping sleeve 6 corresponds to the screw, the clamping sleeve 6 is pushed along the transverse groove 9 to wrap the circumference outer sides of the first flange plate 1 and the second flange plate 2, and the clamping sleeve 6 is connected by using the bolts 3 and the nuts 4. In the process of pushing the clamping sleeve 6, the head of the bolt 3 connecting the first flange plate 1 and the second flange plate 2 is fixed in the clamping groove 10 on the first flange plate 1, the nut 4 is positioned above the lower locking surface 8 of the clamping sleeve 6, the bolt 3 and the nut 4 connecting the first flange plate 1 and the second flange plate 2 are limited between the upper locking surface 7 and the lower locking surface 8 of the clamping sleeve 6, and the bolt 3 is prevented from being unscrewed when the vibration is avoided.
In the installation of the clamping sleeve 6, the conical surface of the upper locking surface 7 is matched with the abutting surface on the first flange plate 1, the conical surface of the lower locking surface 8 is matched with the abutting surface on the second flange plate 2, the abutting surface on the first flange plate 1 is inclined downwards from inside to outside and is arranged at the outer edge of the top, the abutting surface on the second flange plate 2 is inclined upwards from inside to outside and is arranged at the outer edge of the bottom, the conical surface of the upper locking surface 7 presses the abutting surface of the first flange plate 1 downwards, and meanwhile, the conical surface of the lower locking surface 8 presses the abutting surface of the second flange plate 2 upwards, so that the sealing piece between the first flange plate 1 and the second flange plate 2 is pressed, the first flange plate 1 and the second flange plate 2 are more attached, the problem that gaps between the first flange plate 1 and the second flange plate 2 and the sealing piece are sealed tightly due to the fact that the nuts 4 are not screwed in place when the fixing pieces are connected is avoided, and a good sealing environment is formed.
The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the design concept of the present utility model should be included in the scope of the present utility model.
Claims (6)
1. The utility model provides a pipeline flange, includes first ring flange (1), second ring flange (2) and mounting, the mounting includes bolt (3) and nut (4), first ring flange (1) and second ring flange (2) are provided with corresponding through-hole (5), first ring flange (1) and second ring flange (2) are connected through-hole (5) to the mounting, its characterized in that: the novel anti-theft bolt further comprises a pair of clamping sleeves (6) which are wrapped on the outer sides of the circumferences of the first flange plate (1) and the second flange plate (2), an upper locking surface (7) which is propped against the first flange plate (1) and a lower locking surface (8) which is matched with the nut (4) are arranged on the inner wall of the clamping sleeve (6), and a transverse groove (9) which is in sliding fit with a screw rod of the bolt (3) is formed in the lower locking surface (8).
2. A pipe flange according to claim 1, characterized in that: one end of the through hole (5) on the first flange plate (1) is provided with a clamping groove (10), and the bolt (3) is embedded in the clamping groove (10) to abut against the upper locking surface (7).
3. A pipe flange according to claim 1, characterized in that: the upper locking surface (7) of the clamping sleeve (6) is provided with a conical surface, and the first flange plate (1) is provided with an abutting surface corresponding to the conical surface.
4. A pipe flange according to claim 3, wherein: the lower locking surface (8) of the clamping sleeve (6) is provided with a conical surface, and the second flange plate (2) is provided with an abutting surface corresponding to the conical surface.
5. A pipe flange according to claim 1, characterized in that: the clamping sleeve (6) is detachably mounted through the fixing piece.
6. A pipe flange according to claim 1, characterized in that: sealing sheets are arranged between the first flange plate (1) and the second flange plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322521914.XU CN220727444U (en) | 2023-09-15 | 2023-09-15 | Pipeline flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322521914.XU CN220727444U (en) | 2023-09-15 | 2023-09-15 | Pipeline flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220727444U true CN220727444U (en) | 2024-04-05 |
Family
ID=90487405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322521914.XU Active CN220727444U (en) | 2023-09-15 | 2023-09-15 | Pipeline flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220727444U (en) |
-
2023
- 2023-09-15 CN CN202322521914.XU patent/CN220727444U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |